... ,16s+40d spandex 10s+80d spandex Features: (1)core spunyarn(2)Air-covering or traditional-covering(3)Produced with Japanese ... specifications according to customers' demands.ZhangjiagangChunfeng Uretham Elastic fiber Yarn Co Ltd is a professional manufacturer of spandex cover ... this line . The spandex cover yarn our factory manufacture include Air cover yarn and Traditional cover yarn .It can be used as ...